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When it comes to troubleshooting, there are a few common CCNA-level commands that you should be familiar with:
- Confirm that layer 1 is okay before you start troubleshooting layer 2 problems
- Make sure layer 2 is up before you start troubleshooting layer 3 problems
- Check that the layer 3 addresses are set up correctly
- Then start looking at routing protocols like RIP, OSPF, and EIGRP
Continue reading to learn more about CCNA-level troubleshooting.